Format fix 1980s and 1990s README.md files

I also updated the todo.md file as I left some things out that have to
be done. I only explicitly named one thing but when I go over them as a
final pass I will address the things in question (some will require
discussion).

1988/README.md

@@ -1,26 +1,25 @@
-1988 marked the "The Fifth International Obfuscated C Code Contest"
+# 1988 marked the "The Fifth International Obfuscated C Code Contest"
 
-
-Look at the README.md file for the given winner for information
-on how to compile the winner and how to run the winning program.
+Look at the README.md file for the given winning entry for information
+on how to compile it and how to run the winning program.
 Look at the winning source and try to figure how it does what it does!
 You may then wish to look at the Author's remarks for even more details.
 
-The maximum size of entries was raised from 1024 to 1536 bytes, however
-smaller entries were encouraged.  Due to the ["Best Abuse of the Rules"
-winner of 1987](../1987/biggar/), a limit of 160 chars in the compile line was
-introduced.
+The maximum size of entries was raised from 1024 to 1536 bytes, however smaller
+entries were encouraged.  Due to the ["Best Abuse of the Rules" winner of
+1987](../1987/biggar/), a limit of 160 chars in the compile line was introduced.
 
 This year, the Grand Prize was given to the most unusual entry and best
 abuse of the C Preprocessor rather than the most well rounded entry.
 
 [Rules](rules.txt) and results were posted to comp.lang.c, comp.sources.unix and
-alt.sources.  The 1988 winners will be published in the Micro/Systems Journal.
+alt.sources.  The 1988 winners will be published in the [Micro/Systems
+Journal](https://www.vintage-computer.com/publications.php?microsystemsjournal).
 
 Winning entries for previous years were repackaged with each year
 being in its own directory.  Makefiles and hints were also provided.
-The package was posted to the: comp.sources.unix newsgroup.  They are
-also available on a wide number of Usenet archive sites.
+The package was posted to the comp.sources.unix newsgroup.  They are
+also available on a wide number of USENET archive sites.
 
 =-=